Where does “atabeg” come from?

atabeg (Turkish) comes from Turkish ata, from Proto-Turkic ata — father; ancestor.

Ancestry of “atabeg”, step by step

StepLanguageWordMeaning
1Turkishatafather; predecessor, forerunner; ancestor,...
2Proto-Turkicatafather; ancestor
Every word from Proto-Turkic ata →Every word from Turkish ata →